Hiển thị dữ liệu từ cơ sở dữ liệu bằng cách sử dụng bộ điều hợp cơ sở và chế độ xem danh sách

Tạo cơ sở dữ liệu

 public class DatabaseHandler extends SQLiteOpenHelper {

        //Database Version
        private static final int DATABASE_VERSION = 1;
        //Database Name
        private static final String DATABASE_NAME = "Test";
        //Table Name
        private static final String TABLE_TEST = "TestTable";
        //Column Name
        private static final String KEY_ID = "id";
        private static final String KEY_NAME = "name";
        private static final String KEY_AGE = "age";

        public DatabaseHandler(Context context) {
            super(context, DATABASE_NAME, null, DATABASE_VERSION);
        }

        //Create Table
        @Override
        public void onCreate(SQLiteDatabase db) {
            String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_TEST + "("
                    + KEY_ID + " INTEGER PRIMARY KEY," + KEY_NAME + " TEXT,"
                    + KEY_AGE + " TEXT" + ")";
            db.execSQL(CREATE_CONTACTS_TABLE);
        }

        @Override
        public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
            db.execSQL("DROP TABLE IF EXISTS " + TABLE_TEST);
            onCreate(db);
        }

        //Insert Value
        public void adddata(Context context,String movieId,String songId) {
            SQLiteDatabase db = this.getWritableDatabase();
            ContentValues values = new ContentValues();
            values.put(KEY_NAME, movieId);
            values.put(KEY_AGE, songId); 
            db.insert(TABLE_TEST, null, values);
            db.close(); 
        }

        //Get Row Count
        public int getCount() {
            String countQuery = "SELECT  * FROM " + TABLE_TEST;
            int count = 0;
            SQLiteDatabase db = this.getReadableDatabase();
            Cursor cursor = db.rawQuery(countQuery, null);
            if(cursor != null && !cursor.isClosed()){
                count = cursor.getCount();
                cursor.close();
            }   
            return count;
        }

        //Delete Query
        public void removeFav(int id) {
            String countQuery = "DELETE FROM " + TABLE_TEST + " where " + KEY_ID + "= " + id ;
            SQLiteDatabase db = this.getReadableDatabase();
            db.execSQL(countQuery);
        }

        //Get FavList
        public List<FavoriteList> getFavList(){
            String selectQuery = "SELECT  * FROM " + TABLE_TEST;
            SQLiteDatabase db = this.getWritableDatabase();
            Cursor cursor = db.rawQuery(selectQuery, null);
            List<FavoriteList> FavList = new ArrayList<FavoriteList>();
            if (cursor.moveToFirst()) {
                do {
                    FavoriteList list = new FavoriteList();
                    list.setId(Integer.parseInt(cursor.getString(0)));
                    list.setName(cursor.getString(1));
                    list.setAge(cursor.getString(2));
                    FavList.add(list);
                } while (cursor.moveToNext());
            }
            return FavList;
        }
}

và tạo chế độ xem danh sách tùy chỉnh bằng cách sử dụng bộ điều hợp cơ sở như bên dưới

public class ViewAdapter extends BaseAdapter {

        LayoutInflater mInflater;

        public ViewAdapter() {
            mInflater = LayoutInflater.from(context);
        }

        @Override
        public int getCount() {
            return favoriteList.size();
        }

        @Override
        public Object getItem(int position) {
            return null;
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(final int position, View convertView, ViewGroup parent) {

            if (convertView == null) {
                convertView = mInflater.inflate(R.layout.listitem,null);
            }

            final TextView nameText = (TextView) convertView.findViewById(R.id.nameText);
            nameText.setText("Name : "+favoriteList.get(position).getName());
            final TextView ageText = (TextView) convertView.findViewById(R.id.ageText);
            ageText.setText("Age : "+favoriteList.get(position).getAge());

            final Button edit = (Button) convertView.findViewById(R.id.edit);
            edit.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View v) {
                    final Dialog dialog = new Dialog(context);
                    dialog.setContentView(R.layout.row);
                    dialog.setTitle("Add Data to Database");
                    final EditText name = (EditText) dialog.findViewById(R.id.name);
                    final EditText age = (EditText) dialog.findViewById(R.id.age);
                    Button Add = (Button) dialog.findViewById(R.id.Add);
                    Add.setText("Add");
                    Add.setOnClickListener(new OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            if(name.getText().toString() != null && name.getText().toString().length() >0 ){
                                if(age.getText().toString() != null && age.getText().toString().length() >0 ){
                                    db.updateRow(favoriteList.get(position).getId(), name.getText().toString(), age.getText().toString());
                                    favoriteList = db.getFavList();
                                    listView.setAdapter(new ViewAdapter());
                                    dialog.dismiss();
                                }else{
                                    Toast.makeText(getApplicationContext(), "Please Enter the Age", Toast.LENGTH_LONG).show();  
                                }
                            }else{
                                Toast.makeText(getApplicationContext(), "Please Enter the Name", Toast.LENGTH_LONG).show(); 
                            }
                        }
                    });
                    dialog.show();  
                }
            });
            final Button delete = (Button) convertView.findViewById(R.id.delete);
            delete.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View v) {
                    db.removeFav(favoriteList.get(position).getId());
                    notifyDataSetChanged();
                    favoriteList = db.getFavList();
                    listView.setAdapter(new ViewAdapter());
                }
            });
            return convertView;
        }
    }

Lấy dữ liệu từ cơ sở dữ liệu:

favoriteList = db.getFavList();

cuối cùng thêm bộ điều hợp

listView.setAdapter(new ViewAdapter());

Nếu bạn cần thêm trợ giúp, vui lòng xem Url bên dưới

http://mylearnandroid.blogspot.in/2014/04/android-sqlite-with-custom-listview.html